This is a picture of the ARC system at the FNAL testing facility.  It consist of a PC, SRDAPV, Front-End Adaptor, and power supply.  You can see a TOB module that will be tested using this system.

This is a close up of the TOB connected to the Front-End Adaptor of the ARC system.  The Front-End Adaptor provides over voltage and current protection for the hybrid and module.  The flying red wire is the bias connection.